Question about 2003 Ford Expedition
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Posted on Jan 02, 2017
you would have to drop the tank ont this one. make sure you de-pressurize the system before you start. disconnect the lines going to the tank and put a jack under. loosen the bolts and drop the tank slowly.
Posted on Nov 14, 2009
If the engine
cranks over normally when you attempt to start you car, but the engine
does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION.
The engine needs adequate fuel pressure, a properly timed spark and
normal compression to start.
1) To find why the engine won't start, remove the air inlet tube from the throttle body, push the throttle open and spray a small amount of aerosol starting fluid into the engine. Crank the engine. If it has spark and compression but NO FUEL, it will start and run a few seconds before dying. If it does NOT start, it probably has NO SPARK.
2)Another method to check for spark is to pull a spark plug wire off of a spark plug (if it has plug wires, coil-on-plug ignitions do not) and place the open end of the plug wire near a metal surface on the engine. Have a helper crank the engine while you watch for a spark. DO NOT hold the wire while doing this as it can shock you. If you see a spark, the problem is not spark, but most likely NO FUEL or NO COMPRESSION. If you do not see a spark, the problem is in the IGNITION CIRCUIT.
3)Proper fuel pressure is critical for fuel injected engines to start and run. You should hear the fuel pump inside the fuel tank buzz for a couple of seconds when the ignition is turned on (no buzz means the pump is not running and the engine is not getting fuel). You can smell the tailpipe for gasoline vapors after cranking the engine. If you smell gas, the problem is likely not fuel but NO SPARK. You can also remove the plastic cap and press the schraeder valve test fitting on the fuel rail to see if there is any fuel pressure to the engine (not a very accurate test because fuel pressure must be at a certain level for the engine to start, for that you need a gauge). Even so, no fuel at the fuel rail would tell you fuel is not getting to the engine..
Posted on Mar 21, 2010
I will try to help you. You are correct about the starting fluid, if it has fire starting fluid should do something. So the problem must be either no fire to the plugs or the timing belt is broke.
Check to see if the plugs have spark. If they do not, then get with the Autoparts store and ask if your car needs a Ignition relay to run. Then ask if your car takes a rubber timing belt. If your car does not have a rubber timing belt try the Ignition relay. If you do have a rubber belt check behind the shield in front of the engine to see if the timing belt is broke.
The timing belt is different than the serpetine belt that drives the pulleys. Cars with rubber timing belts have both belts. Should your timing belt be broken it is not an expensive repair. But you will need to details on replacement of that part.
Posted on Apr 18, 2010
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Sep 14, 2015 | Cars & Trucks
Aug 07, 2015 | 2003 Ford Expedition
The computer controls the injection of the fuel. If you look at the wiring diagram you will note the bottom 4 pins that are the negative and positive to the left and right injection. Atleast on my 1991 it is .Could be the ecm or computer is sending a false signal or not sending one at all. A sign of this is the fuel pump in the gas tank can be heard and will continue to run as if pressure in the fuel system is not building. Tthe truck want crank as if no fuel. When starter fluid is injected into the Throttle body the egine will start and run untill fluid is used up. It will keep running as long as fluid is added.
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